DE4130494A1 - Liq. mixt. for cleaning, esp. removing traces of solder - contains alcohol, glycol ether and opt. deionised water - Google Patents
Liq. mixt. for cleaning, esp. removing traces of solder - contains alcohol, glycol ether and opt. deionised waterInfo
- Publication number
- DE4130494A1 DE4130494A1 DE19914130494 DE4130494A DE4130494A1 DE 4130494 A1 DE4130494 A1 DE 4130494A1 DE 19914130494 DE19914130494 DE 19914130494 DE 4130494 A DE4130494 A DE 4130494A DE 4130494 A1 DE4130494 A1 DE 4130494A1
- Authority
- DE
- Germany
- Prior art keywords
- butanol
- component
- cleaning
- liquid mixture
- monoisopropyl ether
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 23
- 239000008367 deionised water Substances 0.000 title claims abstract description 7
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 title claims abstract description 6
- 229910000679 solder Inorganic materials 0.000 title abstract description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title abstract description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical group CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims abstract description 22
- HCGFUIQPSOCUHI-UHFFFAOYSA-N 2-propan-2-yloxyethanol Chemical compound CC(C)OCCO HCGFUIQPSOCUHI-UHFFFAOYSA-N 0.000 claims abstract 6
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims abstract 5
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims abstract 3
- ZAFNJMIOTHYJRJ-UHFFFAOYSA-N Diisopropyl ether Chemical compound CC(C)OC(C)C ZAFNJMIOTHYJRJ-UHFFFAOYSA-N 0.000 claims abstract 2
- 239000007788 liquid Substances 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 239000004020 conductor Substances 0.000 claims description 3
- 150000001298 alcohols Chemical class 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 2
- 239000010935 stainless steel Substances 0.000 abstract description 2
- 125000003827 glycol group Chemical group 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 10
- 230000004907 flux Effects 0.000 description 6
- 239000011780 sodium chloride Substances 0.000 description 5
- 239000003599 detergent Substances 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- PPWHTZKZQNXVAE-UHFFFAOYSA-N Tetracaine hydrochloride Chemical compound Cl.CCCCNC1=CC=C(C(=O)OCCN(C)C)C=C1 PPWHTZKZQNXVAE-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
- H05K3/26—Cleaning or polishing of the conductive pattern
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/263—Ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/32—Organic compounds containing nitrogen
- C11D7/3227—Ethers thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5022—Organic solvents containing oxygen
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/032—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing oxygen-containing compounds
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0779—Treatments involving liquids, e.g. plating, rinsing characterised by the specific liquids involved
- H05K2203/0783—Using solvent, e.g. for cleaning; Regulating solvent content of pastes or coatings for adjusting the viscosity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- Emergency Medicine (AREA)
- Health & Medical Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Detergent Compositions (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine flüssige Mischung zum Reinigen insbesondere von gelöteten Leiterplatten, Streifenleitern, Flachbaugruppen, Schichtschaltungen usw.The invention relates to a liquid mixture for Cleaning especially of soldered circuit boards, Strip conductors, printed circuit boards, layer circuits, etc.
Für solche Zwecke wurden früher halogenierte Kohlenwasserstoffe verwendet, insbesondere FCKW, welche aber mit der zweiten Bundes-Immissionsschutzverordnung aus Umweltschutzgründen ersetzt werden mußten. Als Ersatzreiniger gibt es eine Menge an Flüssigkeiten und Mischungen. Beispielsweise ist das Reinigen mit Alkoholen, Terpenen, Kohlenwasserstoffen oder mit stark alkalischen Reiniungsflüssigkeiten bekannt.Halogenated ones were used for such purposes Hydrocarbons used, especially CFCs, but which with the second Federal Immission Control Ordinance Environmental reasons had to be replaced. As a replacement cleaner there are a lot of liquids and mixtures. For example, cleaning with alcohols, terpenes, Hydrocarbons or with strongly alkaline Cleaning fluids known.
Allerdings sind die genannten Alternativen entweder in ihrer Reinigungswirkung ungenügend, aus arbeitsschutztechnischer Sicht, z. B. Gesundheitsschutz, Explosionsschutz usw. unbrauchbar, oder es werden durch die Benützung derselben die Umweltschutzprobleme aus der Abluft ins Abwasser verlagert. Zwar kann man bei dem einen oder anderen Reiniger die genannten oder einige der genannten Nachteile umgehen, so zum Beispiel bei der Verwendung von Ethanol, dessen Explosionsgefährlichkeit durch aufwendige Explosions- Schutzmaßnahmen abgeschwächt werden muß, z. B. indem das Reinigungsbad auf eine Temperatur von unter 12°Celsius abgekühlt wird. Doch weist Ethanol bei dieser Temperatur ein stark vermindertes Lösevermögen gegenüber Flußmittelresten auf und macht so häufige Nacharbeiten erforderlich.However, the alternatives mentioned are either in their Insufficient cleaning effect, from an occupational safety point of view View, e.g. B. Health protection, explosion protection, etc. unusable, or it will become the use of the same Environmental protection problems from the exhaust air to wastewater. You can use one or the other cleaner or some of the disadvantages mentioned, so to Example using ethanol whose Explosion hazard due to complex explosion Protective measures must be weakened, e.g. B. by that Cleaning bath to a temperature below 12 ° Celsius is cooled. But ethanol shows at this temperature greatly reduced solvent power to flux residues and makes frequent rework necessary.
Der Erfindung lag die folgende Aufgabe zugrunde, eine gut wirkende Reinigungsflüssigkeit anzugeben, welche umweltverträglich ist, welche im Zuge der Arbeitsschutzvorschriften den Arbeitsprozeß unkritisch vonstatten gehen läßt, welche nicht allzu teuer ist, welche in günstiger Weise entsorgt werden kann und welche vor allen Dingen einen Flammpunkt von größer als Raumtemperatur aufweist.The invention was based on the following object, a good one acting cleaning liquid specify which is environmentally friendly, which in the course of Health and safety regulations make the work process uncritical which is not too expensive, which in can be disposed of cheaply and which before all Things a flash point greater than room temperature having.
Die Lösung dieser Aufgabe erfolgt durch die Merkmale gemäß Anspruch 1. Vorteilhafte Weiterbildungen bzw. Ausgestaltungen ergeben sich durch die Unteransprüche.This problem is solved by the features according to Claim 1. Advantageous further developments or refinements result from the subclaims.
Der erfindungsgemäße Reiniger weist folgende Vorteile auf:
Gutes Reinigungsergebnis, Umweltverträglichkeit,
Arbeitsschutzverträglichkeit, preiswert, umweltfreundliche
Entsorgung und ein Flammpunkt von über 40°Celsius.
Der Vorteil der Recyclingfähigkeit äußert sich darin, daß
aufgrund des chemischen Aufbaus des Reinigers und den
Siedepunkten der Einzelkomponenten eine Wiederaufbereitung
durch Destillation ohne thermische Zersetzung der
Einzelkomponenten möglich ist, d. h. daß unter Vakuum der
Siedepunkt heruntergesetzt wird, so daß der Reiniger unter
Separierung der abgelösten zu reinigenden Rückstände
zurückgewonnen werden kann. Durch beliebig oft wiederholbare
Wiederaufarbeitung kann der Chemikalienverbrauch reduziert
werden.The cleaner according to the invention has the following advantages:
Good cleaning result, environmental compatibility, occupational safety compatibility, inexpensive, environmentally friendly disposal and a flash point of over 40 ° Celsius. The advantage of recyclability is that the chemical structure of the cleaner and the boiling points of the individual components mean that it can be reprocessed by distillation without thermal decomposition of the individual components, i.e. that the boiling point is reduced under vacuum, so that the detergent is separated while separating it cleaning residues can be recovered. The chemical consumption can be reduced by reprocessing which can be repeated as often as required.
Ein weiterer Vorteil liegt darin, daß sowohl für das Reinigen dampfphasengelöteter Streifenleiter auf Träger als auch für das Reinigen von Streifenleiter mit aufgelöteten Bauelementen dasselbe einheitliche und effektive Reinigungsverfahren mit vorliegender erfindungsgemäßer Reinigerflüssigkeit eingesetzt werden kann.Another advantage is that both for cleaning vapor phase soldered strip conductor on carrier as well as for cleaning strip lines with soldered components using the same uniform and effective cleaning process The present cleaning liquid according to the invention is used can be.
Die Reinigung von mit kolophoniumhaltigen Flußmitteln und Lotpasten gelöteten Flachbaugruppen erfolgt mit vorliegender Reinigungsflüssigkeit mit sehr gutem Ergebnis, d. h. rückstandsfrei. Die vorliegende Reinigungsflüssigkeit ist in der Lage, Lotpastenrückstände nach dem Löten rückstandsfrei zu entfernen, auch bei modernen Lotpasten, die einen komplexen Aufbau mit Lot, Flußmittel, organische Bindemittel, Thixotropiermittel, Glykolderivate als Verdünner usw. aufweisen. Die Reinigung erfolgt auch nach dem Reflowlötverfahren rückstandsfrei.Cleaning with fluxes containing rosin and Solder pastes soldered flat assemblies are made with the present Cleaning liquid with a very good result, d. H. residue-free. The cleaning liquid is in able to leave residue on solder paste after soldering remove even with modern solder pastes that have a complex Construction with solder, flux, organic binders, Thixotropic agents, glycol derivatives as thinners, etc. exhibit. Cleaning also takes place after Reflow soldering process residue-free.
Die rückstandsfreie Entfernung der Lotpasten usw. konnte nicht nur visuell beobachtet werden, sondern wurde mittels Rückstandsmessungen mit einem sogenannten Ionographen auch objektiv nachgewiesen. Die Messungen der ionogenen Rückstände mit dem Ionographen ergaben, daß 85% der Meßwerte deutlich unter 1 µg NaCl-Äquivalent pro qcm Substratoberfläche liegen, siehe Fig. 1. Selbst die Ausreißer liegen noch mit Abstand innerhalb des MIL-Standards von 3,1 µg NaCl-Äquivalent pro qcm Substratoberfläche.The residue-free removal of the solder pastes etc. could not only be observed visually, but was also objectively verified by means of residue measurements with a so-called ionograph. The measurements of the ionogenic residues with the ionograph showed that 85% of the measured values are clearly below 1 µg NaCl equivalent per qcm substrate surface, see Fig. 1. Even the outliers are still within the MIL standard of 3.1 µg NaCl -Equivalent per qcm substrate surface.
Die Fig. 2 und 3 zeigen in einem Schaubild ebenfalls die Ergebnisse von Rückstandsmessungen mittels des obenerwähnten Ionographen. Figs. 2 and 3 also show, in a graph, the results of measurements by means of the above-mentioned residue Ionographen.
Beide Figuren bringen den Synergieeffekt der vorliegenden Reinigerflüssigkeit, zum Audruck, wobei den gemessenen ionographischen Rückständen nach zwei ausgeführten Mischungsformeln der vorliegenden erfindungsgemäßen Reinigerflüssigkeit diejenigen ionographischen Rückstände der Ausgangskomponenten gegenübergestellt werden. Beidesmal erfolgt dies an zehn Prüflingen. Both figures bring the synergy effect of the present one Detergent liquid, for printing, whereby the measured ionographic residues after two runs Mixing formulas of the present invention Detergent liquid those ionographic residues of the Starting components are compared. Both times this is done on ten test objects.
In Fig. 2 wurde eine Reinigerflüssigkeit mit dem Mischungsverhältnis 60% n-Butanol und 40% Glykolether verwendet. Bei allen Prüflingen wurde ein Rückstand von nicht mehr als etwa 0,6 µg pro qcm NaCl-Äquivalent gemessen, im Durchschnitt etwa 0,5. Dagegen erreichten 100% n-Butanol um 1,4, maximal 1,6 und 100% Glykolether bis 2 µg pro qcm NaCl- Äquivalent. Noch bessere Ergebnisse brachte die Mischung aus 50% n-Butanol, 40% Glykolether und 10% deionisiertes Wasser. Die Ergebnisse dieser Mischung BGW 541 zeigt die Fig. 3, wonach alle 10 Prüflinge mit maximal etwa 0,25 µg pro qcm NaCl-Äquivalent weit unter dem MIL-Standard von 3,1 liegen. Am deutlichsten läßt sich der Synergieeffekt an der Wirkung des deionisierten Wassers bei der Mischung BGW 541 zeigen; 100% Wasser deion. hat gegenüber Kolophoniumflußmitteln absolut kein Lösevermögen, dies wurde in Fig. 3 nicht dargestellt. 10% Wasser als Bestandteil der Mischung bringt jedoch eine polare Komponente in die Mischung ein und erzielt so eine wesentliche Verbesserung des Gesamtlösevermögens hinsichtlich der polaren Bestandteile des Flußmittels.In Fig. 2, a cleaning liquid with a mixing ratio of 60% n-butanol and 40% glycol ether was used. A residue of no more than about 0.6 µg per qcm NaCl equivalent was measured in all test objects, on average about 0.5. In contrast, 100% n-butanol achieved 1.4, maximum 1.6 and 100% glycol ether up to 2 µg per qcm NaCl equivalent. The mixture of 50% n-butanol, 40% glycol ether and 10% deionized water gave even better results. The results of this mixture BGW 541 are shown in FIG. 3, according to which all 10 test specimens with a maximum of approximately 0.25 μg per qcm NaCl equivalent are far below the MIL standard of 3.1. The synergy effect can be seen most clearly in the effect of the deionized water in the BGW 541 mixture; 100% water deion. has absolutely no solvency compared to rosin fluxes, this was not shown in FIG. 3. However, 10% water as a component of the mixture introduces a polar component into the mixture and thus achieves a significant improvement in the overall solvent capacity with regard to the polar components of the flux.
Ergänzend wäre noch zu bemerken, daß die erfindungsgemäße Reinigerflüssigkeit abwasserfrei reinigt und daß die gebrauchte Reinigerflüssigkeit wie andere halogenfreie organische Lösungsmittel entsorgt werden kann.In addition, it should be noted that the invention Cleaner liquid cleans wastewater and that the used cleaning fluid like other halogen-free organic solvents can be disposed of.
Ein weiterer Vorteil der erfindungsgemäßen Reinigerflüssigkeit besteht darin, daß sie auch zur Reinigung von Metallen, Hohlleitern usw. eingesetzt werden kann. Außerdem ist sie nicht korrosiv, d. h. sie muß nicht wie andere Reinigerflüssigkeiten in Edelstahlbehältern aufbewahrt werden. Mit dem erfindungsgemäßen Reiniger kann auch eine mehr als doppelt so lange Standzeit erreicht werden als mit den herkömmlichen Reinigern. Einer der mit am höchsten zu bewertenden Vorteile ist aber derjenige, daß eine außergewöhnlich hohe Reinigung von Flußmittelrückständen erreicht wird, insbesondere auch von ionogenen Rückständen, so daß hiermit eine Voraussetzung für den Einsatz nach Post-, MIL- und Raumfahrtspezifikationen erfüllt ist und der Einsatz wesentlich unkritischer wird.Another advantage of the cleaning liquid according to the invention is that they can also be used to clean metals, Waveguides, etc. can be used. Besides, it is not corrosive, d. H. it doesn't have to be like others Cleaning fluids are kept in stainless steel containers. With the cleaner according to the invention, more than service life is twice as long as with the conventional cleaners. One of the highest evaluating advantages is that one exceptionally high cleaning of flux residues is achieved, in particular also from ionic residues, so that this is a prerequisite for use according to post, MIL and space specifications are met and use becomes much less critical.
Claims (8)
a: Alkohole 20-80%,
b: Glykolether 10-70% und
c: Deionisiertes Wasser 0-30%.1. Liquid mixture for cleaning in particular soldered circuit boards, strip conductors, printed circuit boards, layer circuits, etc., consisting of the following components a, b, c with the following volume fractions:
a: alcohols 20-80%,
b: glycol ether 10-70% and
c: Deionized water 0-30%.
n-Butanol 40-60%,
Ethylenglykolmonoisopropylether 30-50% und
Deionisiertes Wasser 5-15%.8. Liquid mixture according to claim 3 and 6, characterized by the following components a, b and c with the following volume fractions:
n-butanol 40-60%,
Ethylene glycol monoisopropyl ether 30-50% and
Deionized water 5-15%.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914130494 DE4130494C2 (en) | 1991-09-13 | 1991-09-13 | Cleaning fluid |
| DE19924236580 DE4236580C2 (en) | 1991-09-13 | 1992-10-29 | Cleaning fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19914130494 DE4130494C2 (en) | 1991-09-13 | 1991-09-13 | Cleaning fluid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE4130494A1 true DE4130494A1 (en) | 1993-04-01 |
| DE4130494C2 DE4130494C2 (en) | 1994-02-03 |
Family
ID=6440538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19914130494 Expired - Fee Related DE4130494C2 (en) | 1991-09-13 | 1991-09-13 | Cleaning fluid |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4130494C2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5334256A (en) * | 1993-06-02 | 1994-08-02 | Howe Charles R | Paint stripping composition |
| EP0636710A1 (en) * | 1993-07-27 | 1995-02-01 | Dr. O.K. WACK CHEMIE GmbH | Method for cleaning articles |
| US5486314A (en) * | 1992-08-07 | 1996-01-23 | O. K. Wack Chemie Gmbh | Cleaning agent containing glycol ethers |
| US5643860A (en) * | 1994-05-06 | 1997-07-01 | Comstar International, Inc. | Cleaning composition for pipes and coils of a refrigeration system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013219782B4 (en) * | 2013-09-30 | 2018-08-16 | Infineon Technologies Ag | CLEANING APPARATUS AND METHOD FOR CLEANING WASH GOOD, ESPECIALLY FOR CLEANING SEMICONDUCTOR MODULES |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3551204A (en) * | 1967-08-08 | 1970-12-29 | Amicon Corp | Process and composition for recovering electronic devices from encapsulation in potting compounds |
| GB1368065A (en) * | 1970-11-20 | 1974-09-25 | Howson Algraphy Ltd | Cleansing treatments |
| DE2847691A1 (en) * | 1978-11-03 | 1980-05-14 | Licentia Gmbh | Washing liq. for cleaning printed circuit surface - contains xylene, glycol mono:butyl ether, isobutanol and opt. toluene and (m)ethanol |
-
1991
- 1991-09-13 DE DE19914130494 patent/DE4130494C2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3551204A (en) * | 1967-08-08 | 1970-12-29 | Amicon Corp | Process and composition for recovering electronic devices from encapsulation in potting compounds |
| GB1368065A (en) * | 1970-11-20 | 1974-09-25 | Howson Algraphy Ltd | Cleansing treatments |
| DE2847691A1 (en) * | 1978-11-03 | 1980-05-14 | Licentia Gmbh | Washing liq. for cleaning printed circuit surface - contains xylene, glycol mono:butyl ether, isobutanol and opt. toluene and (m)ethanol |
Non-Patent Citations (1)
| Title |
|---|
| Derwent-Abstr. 84-227937/37 zu J 59134-891-A * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5486314A (en) * | 1992-08-07 | 1996-01-23 | O. K. Wack Chemie Gmbh | Cleaning agent containing glycol ethers |
| US5334256A (en) * | 1993-06-02 | 1994-08-02 | Howe Charles R | Paint stripping composition |
| EP0636710A1 (en) * | 1993-07-27 | 1995-02-01 | Dr. O.K. WACK CHEMIE GmbH | Method for cleaning articles |
| DE4325133A1 (en) * | 1993-07-27 | 1995-02-02 | Wack O K Chemie Gmbh | Process for cleaning objects |
| US5643860A (en) * | 1994-05-06 | 1997-07-01 | Comstar International, Inc. | Cleaning composition for pipes and coils of a refrigeration system |
Also Published As
| Publication number | Publication date |
|---|---|
| DE4130494C2 (en) | 1994-02-03 |
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